SOLUTION: Can you help me with this question? I came up with 15*0.05x=71 but this is not working out.
A promotional deal for long distance phone service charges a $15 basic fee plus $0.05 p
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Question 125846This question is from textbook
: Can you help me with this question? I came up with 15*0.05x=71 but this is not working out.
A promotional deal for long distance phone service charges a $15 basic fee plus $0.05 per minute for all calls. If Joe's phone bill was $71 under this promotional deal, how many minutes of phone calls did he make? Round to the nearest integer, if necessary. Thanks Sharon Brown
This question is from textbook
Found 2 solutions by checkley71, Earlsdon:
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
15+.05x=71 this represents the $15 basic fee PLUS $.05 for every minute used (x) equals $71.
.05x=71-15
.05x=56
x=56/.05
x=1,120 minutes were used.
proof
15+.05*1,120=71
15+56=71
71=71
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
You can start by writing the equation the expresses the total cost for the phone service: Where: C = total cost, F = basic fee($15) and x = the number of minutes at $0.05 per minute.
Making the appropriate substitutions, we get:
Solve for x by subtracting 15 from both sides.
Now divide both sides by 0.05
or...
minutes.
Check:
Substitute F = $15 and x = 1120 mins.
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